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          LV09-03-linux-03-USB驱动移植
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<details class="folding-tag" blue><summary> 点击查看使用工具及版本 </summary>
              <div class='content'>
              <table>    <tr>        <td align="center" width=150px>Windows</td>        <td align="left">windows11</td>    </tr>    <tr>        <td align="center">Ubuntu</td>        <td align="left">Ubuntu16.04的64位版本</td>      </tr>    <tr>        <td align="center">VMware® Workstation 16 Pro</td>        <td align="left">16.2.3 build-19376536</td>      </tr>    <tr>        <td align="center">SecureCRT</td>        <td align="left">Version 8.7.2 (x64 build 2214)   -   正式版-2020年5月14日</td>      </tr>    <tr>        <td align="center" width=150>Linux开发板</td>        <td align="left">华清远见 底板: FS4412_DEV_V5 核心板: FS4412 V2</td>      </tr>    <tr>        <td align="center" width=150>u-boot</td>        <td align="left">2013.01</td>      </tr></table>
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<details class="folding-tag" blue><summary> 点击查看本文参考资料 </summary>
              <div class='content'>
              <table>    <tr><td align="center">参考方向</td><td align="center">参考原文</td></tr>    <tr><td align="left">系统实验手册</td><td align="left">USB驱动移植</td></tr></table>
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            </details>

<details class="folding-tag" blue><summary> 点击查看相关文件下载 </summary>
              <div class='content'>
              <table>    <tr><td align="center">文件</td><td align="center">下载链接</td></tr>    <tr><td align="left">---</td><td align="left"><a href="" target="_blank">--- <i class="fa fa-external-link-alt"></i> </a></td></tr></table>
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<h1 id="一、修改设备树文件"><a href="#一、修改设备树文件" class="headerlink" title="一、修改设备树文件"></a><font size=3>一、修改设备树文件</font></h1><p>我们打开设备树文件：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">vim /home/hk/5linux/linux-3.14/arch/arm/boot/dts/exynos4412-fs4412.dts</span><br></pre></td></tr></table></figure>

<p>然后在设备树文件最后一个<code>&#125;;</code>前边添加以下内容：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line">usbphy: usbphy@<span class="number">125B</span>0000 &#123;</span><br><span class="line">	<span class="meta">#address-cells = <span class="string">&lt;1&gt;</span>;</span></span><br><span class="line">	<span class="meta">#size-cells = <span class="string">&lt;1&gt;</span>;</span></span><br><span class="line">	compatible = <span class="string">&quot;samsung,exynos4x12-usb2phy&quot;</span>;</span><br><span class="line">	reg = &lt;<span class="number">0x125B0000</span> <span class="number">0x100</span>&gt;;</span><br><span class="line">	ranges;</span><br><span class="line">	clocks = &lt;&amp;clock <span class="number">2</span>&gt;, &lt;&amp;clock <span class="number">305</span>&gt;;</span><br><span class="line">	clock-names = <span class="string">&quot;xusbxti&quot;</span>, <span class="string">&quot;otg&quot;</span>;</span><br><span class="line">	usbphy-sys &#123;</span><br><span class="line">		reg = &lt;<span class="number">0x10020704</span> <span class="number">0x8</span> <span class="number">0x1001021c</span> <span class="number">0x4</span>&gt;;</span><br><span class="line">	&#125;;</span><br><span class="line">&#125;;</span><br><span class="line">ehci@<span class="number">12580000</span> &#123;</span><br><span class="line">	status = <span class="string">&quot;okay&quot;</span>;</span><br><span class="line">	usbphy = &lt;&amp;usbphy&gt;;</span><br><span class="line">&#125;;</span><br><span class="line">usb3503@<span class="number">08</span> &#123;</span><br><span class="line">	compatible = <span class="string">&quot;smsc,usb3503&quot;</span>;</span><br><span class="line">	reg = &lt;<span class="number">0x08</span> <span class="number">0x4</span>&gt;;</span><br><span class="line">	connect-gpios = &lt;&amp;gpm3 <span class="number">3</span> <span class="number">1</span>&gt;;</span><br><span class="line">	intn-gpios = &lt;&amp;gpx2 <span class="number">3</span> <span class="number">1</span>&gt;;</span><br><span class="line">	reset-gpios = &lt;&amp;gpm2 <span class="number">4</span> <span class="number">1</span>&gt;;</span><br><span class="line">	initial-mode = &lt;<span class="number">1</span>&gt;;</span><br><span class="line">&#125;; </span><br></pre></td></tr></table></figure>

<h1 id="二、配置内核"><a href="#二、配置内核" class="headerlink" title="二、配置内核"></a><font size=3>二、配置内核</font></h1><p>我们到<code>linux</code>内核源码顶层目录下，执行以下命令：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">cd vim /home/hk/5linux/linux-3.14/</span><br><span class="line">make menuconfig                    # 打开图形配置界面</span><br></pre></td></tr></table></figure>

<h2 id="1-USB-support"><a href="#1-USB-support" class="headerlink" title="1. USB support "></a><font size=3>1. <code>USB support </code></font></h2><p>我们首先进入<code>USB support</code>配置选项中：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-03-linux-03-USB%E9%A9%B1%E5%8A%A8%E7%A7%BB%E6%A4%8D/img/image-20220908192104278.png" alt="image-20220908192104278" style="zoom:50%;" />

<p>然后开始进行自选项的配置：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">Device Drivers  ---&gt;</span><br><span class="line">	[*] USB support  ---&gt;</span><br><span class="line">		&lt;*&gt;     EHCI HCD (USB 2.0) support</span><br><span class="line">		&lt;*&gt;     EHCI support for Samsung S5P/EXYNOS SoC Series</span><br><span class="line">		&lt;*&gt;     USB Mass Storage support</span><br><span class="line">		&lt;*&gt;   USB3503 HSIC to USB20 Driver</span><br><span class="line">			USB Physical Layer drivers  ---&gt;</span><br><span class="line">				&lt;*&gt; Samsung USB 2.0 PHY controller Driver</span><br></pre></td></tr></table></figure>

<h2 id="2-SCSI-device-support"><a href="#2-SCSI-device-support" class="headerlink" title="2. SCSI device support"></a><font size=3>2. <code>SCSI device support</code></font></h2><p>我们首先进入<code>SCSI device support</code>配置选项中：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-03-linux-03-USB%E9%A9%B1%E5%8A%A8%E7%A7%BB%E6%A4%8D/img/image-20220908193026254.png" alt="image-20220908193026254" style="zoom:50%;" />

<p>然后开始进行自选项的配置：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">Device Drivers  ---&gt;</span><br><span class="line">		SCSI device support  ---&gt;</span><br><span class="line">			&lt;*&gt; SCSI device support</span><br><span class="line">			&lt;*&gt; SCSI disk support</span><br><span class="line">			&lt;*&gt; SCSI generic support</span><br></pre></td></tr></table></figure>

<h2 id="3-USB转串口支持"><a href="#3-USB转串口支持" class="headerlink" title="3. USB转串口支持"></a><font size=3>3. <code>USB</code>转串口支持</font></h2><p>我们后边还可能用到<code>USB</code>转串口支持，所以这里配置一下<code>USB</code>转串口的驱动支持（常见的三种<code>USB</code>串口芯片为<code>CH341</code> 、<code>PL2303</code>  <code>CP210X</code>），这些芯片驱动的配置选项中在这里：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV09-uboot%E4%B8%8Elinux/LV09-03-linux-03-USB%E9%A9%B1%E5%8A%A8%E7%A7%BB%E6%A4%8D/img/image-20220909061857213.png" alt="image-20220909061857213" style="zoom:50%;" />

<p>然后我们来修改一下其中所需要的一些选项：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">Device Drivers  ---&gt;</span><br><span class="line">	[*] USB support  ---&gt;</span><br><span class="line">	&lt;*&gt;   USB Serial Converter support  ---&gt; </span><br><span class="line">			&lt;*&gt;   USB Winchiphead CH341 Single Port Serial Driver </span><br><span class="line">			&lt;*&gt;   USB CP210x family of UART Bridge Controllers </span><br><span class="line">			&lt;*&gt;   USB Prolific 2303 Single Port Serial Driver</span><br></pre></td></tr></table></figure>

<p>需要注意的是，除了这些选项外，还有呢很多的依赖需要进行配置，这个时候我们可以使用图形界面为我们提供的搜索功能，来看一下配置这些芯片驱动的以来是否也都打开了，没打开的可以搜索一下打开。</p>
<ul>
<li><code>USB_SERIAL_CH341</code></li>
</ul>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">┌──────────────────────────── Search Results ─────────────────────────────┐</span><br><span class="line">│ Symbol: USB_SERIAL_CH341 [=y]                                           │  </span><br><span class="line">│ Type  : tristate                                                        │  </span><br><span class="line">│ Prompt: USB Winchiphead CH341 Single Port Serial Driver                 │  </span><br><span class="line">│   Location:                                                             │  </span><br><span class="line">│     -&gt; Device Drivers                                                   │  </span><br><span class="line">│       -&gt; USB support (USB_SUPPORT [=y])                                 │  </span><br><span class="line">│ (1)     -&gt; USB Serial Converter support (USB_SERIAL [=y])               │  </span><br><span class="line">│   Defined at drivers/usb/serial/Kconfig:99                              │  </span><br><span class="line">│   Depends on: USB_SUPPORT [=y] &amp;&amp; USB [=y] &amp;&amp; USB_SERIAL [=y]           │ </span><br></pre></td></tr></table></figure>

<ul>
<li><code>USB_SERIAL_PL2303</code></li>
</ul>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">┌──────────────────────────── Search Results ─────────────────────────────┐</span><br><span class="line">│ Symbol: USB_SERIAL_PL2303 [=y]                                          │  </span><br><span class="line">│ Type  : tristate                                                        │  </span><br><span class="line">│ Prompt: USB Prolific <span class="number">2303</span> Single Port Serial Driver                     │  </span><br><span class="line">│   Location:                                                             │  </span><br><span class="line">│     -&gt; Device Drivers                                                   │  </span><br><span class="line">│       -&gt; USB support (USB_SUPPORT [=y])                                 │  </span><br><span class="line">│ (<span class="number">1</span>)     -&gt; USB Serial Converter support (USB_SERIAL [=y])               │  </span><br><span class="line">│   Defined at drivers/usb/serial/Kconfig:<span class="number">510</span>                             │  </span><br><span class="line">│   Depends on: USB_SUPPORT [=y] &amp;&amp; USB [=y] &amp;&amp; USB_SERIAL [=y]           │ </span><br></pre></td></tr></table></figure>

<ul>
<li><code>USB_SERIAL_CP210X</code></li>
</ul>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">┌──────────────────────────── Search Results ─────────────────────────────┐</span><br><span class="line">│ Symbol: USB_SERIAL_CP210X [=y]                                          │  </span><br><span class="line">│ Type  : tristate                                                        │  </span><br><span class="line">│ Prompt: USB CP210x family of UART Bridge Controllers                    │  </span><br><span class="line">│   Location:                                                             │  </span><br><span class="line">│     -&gt; Device Drivers                                                   │  </span><br><span class="line">│       -&gt; USB support (USB_SUPPORT [=y])                                 │  </span><br><span class="line">│ (1)     -&gt; USB Serial Converter support (USB_SERIAL [=y])               │  </span><br><span class="line">│   Defined at drivers/usb/serial/Kconfig:132                             │  </span><br><span class="line">│   Depends on: USB_SUPPORT [=y] &amp;&amp; USB [=y] &amp;&amp; USB_SERIAL [=y]           │ </span><br></pre></td></tr></table></figure>

<h1 id="三、编译内核和设备树"><a href="#三、编译内核和设备树" class="headerlink" title="三、编译内核和设备树"></a><font size=3>三、编译内核和设备树</font></h1><p>接下来我们在<code>linux</code>源码顶层目录中执行：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">make uImage    # 编译内核</span><br><span class="line">make dtbs      # 编译设备树</span><br></pre></td></tr></table></figure>

<h1 id="四、重启测试"><a href="#四、重启测试" class="headerlink" title="四、重启测试"></a><font size=3>四、重启测试</font></h1><ul>
<li>拷贝相关文件</li>
</ul>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">cp ~/5linux/linux-3.14/arch/arm/boot/uImage ~/3tftp/fs4412/</span><br><span class="line">cp ~/5linux/linux-3.14/arch/arm/boot/dts/exynos4412-fs4412.dtb ~/3tftp/fs4412/</span><br></pre></td></tr></table></figure>

<ul>
<li>重启开发板</li>
<li>插入<code>U</code>盘到任一<code>USB</code>接口</li>
</ul>
<p>若有以下提示，则说明<code>USB</code>移植完成：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta prompt_">[root@farsight]#</span><span class="language-bash">[   10.255000] usb 1-3.3: new high-speed USB device number 3 using exynos-ehci</span></span><br><span class="line">[   10.370000] usb-storage 1-3.3:1.0: USB Mass Storage device detected</span><br><span class="line">[   10.375000] scsi0 : usb-storage 1-3.3:1.0</span><br><span class="line">[   11.380000] scsi 0:0:0:0: Direct-Access     SanDisk  Ultra USB 3.0    1.00 PQ: 0 ANSI: 6</span><br><span class="line">[   11.395000] sd 0:0:0:0: [sda] 120127488 512-byte logical blocks: (61.5 GB/57.2 GiB)</span><br><span class="line">[   11.405000] sd 0:0:0:0: [sda] Write Protect is off</span><br><span class="line">[   11.405000] sd 0:0:0:0: Attached scsi generic sg0 type 0</span><br><span class="line">[   11.410000] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn&#x27;t support DPO or FUA</span><br><span class="line">[   11.445000]  sda: sda1 sda2</span><br><span class="line">[   11.455000] sd 0:0:0:0: [sda] Attached SCSI removable disk</span><br></pre></td></tr></table></figure>

<p>我们可以再看一下<code>/dev/</code>下的设备：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta prompt_">[root@farsight]#</span><span class="language-bash"><span class="built_in">ls</span> /dev/sd*</span></span><br><span class="line">/dev/sda   /dev/sda1  /dev/sda2</span><br></pre></td></tr></table></figure>

<p>回会发现有<code>sda</code>开头的节点出现，这也说明了我们的<code>USB</code>驱动移植成功。</p>
<ul>
<li><code>USB</code>转串口测试</li>
</ul>
<p>我们插上老师给我们的一个协调器模块，可能会看到如下信息：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta prompt_">[root@farsight]#</span><span class="language-bash">[  138.540000] usb 1-3.2: new full-speed USB device number 5 using exynos-ehci</span></span><br><span class="line">[  138.655000] ch341 1-3.2:1.0: ch341-uart converter detected</span><br><span class="line">[  138.665000] usb 1-3.2: ch341-uart converter now attached to ttyUSB0</span><br></pre></td></tr></table></figure>

<p>然后我们看一下设备节点：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta prompt_">[root@farsight]#</span><span class="language-bash"><span class="built_in">ls</span> /dev/ttyUSB0</span></span><br><span class="line">/dev/ttyUSB0</span><br></pre></td></tr></table></figure>


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            year        - 作为date对象的年份，为4位年份值
            month       - 0-11之间的整数，做为date对象的月份
            day         - 1-31之间的整数，做为date对象的天数
            hours       - 0(午夜24点)-23之间的整数，做为date对象的小时数
            minutes     - 0-59之间的整数，做为date对象的分钟数
            seconds     - 0-59之间的整数，做为date对象的秒数
            microseconds - 0-999之间的整数，做为date对象的毫秒数
            ==================================================*/
            var t1 = Date.UTC(2017, 
                              5, 
                              19, 
                              0, 
                              0, 
                              0); //北京时间
            var t2 = Date.UTC(todayYear,todayMonth,todayDate,todayHour,todayMinute,todaySecond);
            var diff = t2-t1;
            var diffYears = Math.floor(diff/years);
            var diffDays = Math.floor((diff/days)-diffYears*365);
            var diffHours = Math.floor((diff-(diffYears*365+diffDays)*days)/hours);
            var diffMinutes = Math.floor((diff-(diffYears*365+diffDays)*days-diffHours*hours)/minutes);
            var diffSeconds = Math.floor((diff-(diffYears*365+diffDays)*days-diffHours*hours-diffMinutes*minutes)/seconds);
            document.getElementById("sitetime").innerHTML="已在这里 "+diffYears+" 年 "+diffDays+" 天 "+diffHours+" 小时 "+diffMinutes+" 分钟 "+diffSeconds+" 秒";
        }
        siteTime();
    </script>



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